Fly screen



Patented Feb. 13, 1923.

GEORGE w. MosHEn, ory Nnwroa'r, KENTUCKY.y

naar

'ina/ artnr FLY SCREEN.

Application led March 29, 1919.A Serial No. 285,98?. f

To all whom it may concern.'

Be it known that l, GEORGE WV. lvlosrrnn,

a citizen of the United States, and a resident of Newport, in the county of Campbell and State of Kentucky, have invented certain new and useful Improvements in Fly Screens, of which the following is a full,

My inventionrelates to a device for at-y tachment to fly lscreens whichwill act as a trap for flies and lead them to walk `out of doors` through the trap, from the inside of the screen. The device as shown is applied to a window screen, but it will be understood that it can Vas well be applied to doors, screened walls or the like.

I accomplish the object of 'my invention, as above stated, by Vthat certain construction and arrangement of parts to be hereinafter more specifically pointed out and claimed-- In the drawing,v l Y Figure 1 is a perspective view of the outside ofa window with the screen device in place. l

Figure 2 is a sectional perspective of one end of the device, showing the outside thereof. y n

Figure 3 is a like view of anend vof the device showing the inside thereof, the construction of the parts being in a different form.

Figure 4 is another modification similarly shown. 1 i

One alternative form of my invention (Figure 2) comprises three pieces of met-al with the necessary rivets or bolts to hold them together and in place. There are two straight narrow bars 1, 2, and a bent or folded section of metal or like material, having the lower piece A and the upper piece B, same to be mounted on any yscreen C, said pieces A and B connected to tongues 16.

The lower bent or folded piece A. com-- prises a straight portion 3 which is set against one side of a piece of screen wire, at any point in its length, `as opposed to the bar 1 on the other side of the wire, The two piecesare then secured to the wire by means of rivets 4, 4, or other desired means. Both the bar and the piece A should extend entirely across the screen to be fitted with the trap, and the screen wire cut just beyond the line of attachment. i

Extending upwardly and toward theQut-L.v side of the screen to be fitted, the' piece .AliS bent longitudinallyat 5 at about athirtylive degree angle `.to `the vertical, and at its upper edge .may be turned back upwardly again, at 6.` .Iz

The piece B1 haslikewisel a straight por; tion 7 which `extends across the screen, and is secured by suitable rivets 8 to the straight lbar 2 on the other'side ofthe screenwire.

'The piece B extends,` downwardly fromy its,`

portion 12, thence :is-.bent back in ageneral slant 14,' until in thefplane of theportion `12, where another overlapping fold 15is made. After the rolling', the metaly eNtend-y ingzat a right angle to the portion 12,is

punched out, leaving'narrow bridging strlps f 1G, as in the first instance, which hold the twosection's A and Bof' the device together,

but leaves `free the passageway 10 forv the eXit 0f the flies; y 1' ln mounting this-device inE anew screen,- 1t 1s planned to secure the portion B tothe upper molding of thescreen frame` and se-V cure the upper edge. ofthe screen wire to the portion A, by bending the wire around the fold 15 and securing it in place with a suitable rivet 17.

lf the device is to be mounted intermediate the ends of the frame, then the fold 11 will be employed as in the case `of the fold. 1f, to secure the wirev gauze, employing rivets 18. This method of mounting is preferred for old screens, but may be use'd for new screens as well if desired. v

It can be readilyv observed'thatI the cheapness of manufacture and readiness and simplicity of installation recommends this form over my first described form of device, this first form being chiefly of value for superior strength and durability.

The pieces above` described should be placed in the screen so that an outwardly and upwardly sloping passageway l() (Figures 2 and 8) extends across the screen, with the upper edges of the pieces A-1and :Bat

the mouth of the passage on the outside on approximately a level. The width should not be more than enough for a large fly to pass through easily. y Moreover the placing of these edges on a level prevents a fly from' A'alighting on one of the inner vwalls of the passage.

AIt should be noted that Athe fly moving 'down the screen on the outside will rarely get yas lfar into the channel asthe large fly at D is shown. Before the fly reaches this position, hefwill cease to 'walk and will fly. Theedges off "the pieces A and B on the outside o'f the screen are too lnarrow for the fly lto sta-nder wallr'on, and the fly walking up the outside-fof 'the piece A when it rcomes to the etlge'thereofwillfly or jump across the r-gap rather than walk down vthe passage l0. "Coming from either' direction the fly will 'step Aor jump across this opening, an addi- 4tion'al reason for this lbeing that he cannot see light through the passage.

Gn the'inside,'however,the fly walking up y the'screen, will see the light up 'through the sign has been passage and will be attracted to walk out throughfit. @nce-it gets outside, it cannot get back 1n again without actually 'flying direct into vthe passage, which v'it will rarely'do.

\ A will sometimeszjump orv fly across the space across the-'passage lO-when itr comes at 3 the screen.

necessitates a llat surface to present to the screen wire, and a protruding central portion would require that the wire be cut be- `fore both edges of the device couldbe lsecured in place.

Accordingly it will he noted that a straight line drawn on the outside, for example, of the portions '3 and 7 of Figure 2 will not be interfered with by the protruding' of the portions 6 and 9. c

Il have shown in Figure 4l another modification in which the inner side ofthe device is the flat side, and this deviceinFigure lis intended for mounting on the outside ol ln connection with the form shown in Figure .4, l have shown tongues 20,

stamped out of 'the metal of the sections A and B, as indicated vat 19, 19, Figure 4l. ln each of my modifications, the principle is that of an outwardly and upwardly sloping passage vayV for the flies protected on the outside against flies entering bymeans ofthe positioning of the edges ofthe side wallso'f `the oassageway. l

"lf aving thus described my invention, what I claim as new and desire to secure by rLetters Patent, v'is:-

In combination with a fly screen, ra trap 4iorinsects comprisinga metallic strip composed ofa lower and, an upperpi'ece to 'extend `across'the screen nintermediate the top and -loottom cross hars of the frame, means for securing lthe 'strip to the screen, said pieces being bent to 'form an yupwardly and" outwardly sl'oping passageway ruiming from the inside'of the scre'ento the outside, and

vhaying bridging strips terminating on -approximately an horizontal plane on the outside of the screen, with the upper piece curved in agradual curve inwardlyand outwardly and thennpwardly and the lower piece upwardly on an outward slant, to yprovide `an effective pathway for insects over both pieces of the trap from the insi'deito` thefoutsideofthe screen'.

GEORGE W. Mosiann. 

